/*
 * Copyright (C) 2010 ZXing authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.zxing.client.android;

import android.graphics.Bitmap;

import com.google.zxing.BinaryBitmap;
import com.google.zxing.DecodeHintType;
import com.google.zxing.LuminanceSource;
import com.google.zxing.MultiFormatReader;
import com.google.zxing.PlanarYUVLuminanceSource;
import com.google.zxing.ReaderException;
import com.google.zxing.Result;
import com.google.zxing.client.android.camera.CameraManager;
import com.google.zxing.common.HybridBinarizer;

import android.os.Bundle;
import android.os.Handler;
import android.os.Looper;
import android.os.Message;
import android.util.Log;

import com.google.zxing.FakeR;

import java.util.Map;

final class DecodeHandler extends Handler {

  private static final String TAG = DecodeHandler.class.getSimpleName();

  private final CaptureActivity activity;
  private final MultiFormatReader multiFormatReader;
  private boolean running = true;

  private static FakeR fakeR;
  DecodeHandler(CaptureActivity activity, Map<DecodeHintType,Object> hints) {
	fakeR = new FakeR(activity);
    multiFormatReader = new MultiFormatReader();
    multiFormatReader.setHints(hints);
    this.activity = activity;
  }

  @Override
  public void handleMessage(Message message) {
    if (!running) {
      return;
    }
    if (message.what == fakeR.getId("id", "decode")) {
        decode((byte[]) message.obj, message.arg1, message.arg2);
    } else if (message.what == fakeR.getId("id", "quit")) {
        running = false;
        Looper.myLooper().quit();
    }
  }

  
  boolean isRotate=false;
  public byte[] rotateData(byte[] data,int width,int height){
	//  //旋转数据
	  byte[] rotatedData = new byte[data.length];
	  for (int y = 0; y < height; y++) {
	      for (int x = 0; x < width; x++)
	          rotatedData[x * height + height - y - 1] = data[x + y * width];
	  }
	    return rotatedData;
  }
  
  
  /**
   * Decode the data within the viewfinder rectangle, and time how long it took. For efficiency,
   * reuse the same reader objects from one decode to the next.
   *
   * @param data   The YUV preview frame.
   * @param width  The width of the preview frame.
   * @param height The height of the preview frame.
   */
  private void decode(byte[] data, int width, int height) {
    long start = System.currentTimeMillis();
    Result rawResult = null;
    
    byte[] rotatedData = new byte[data.length];   
    for (int y = 0; y < height; y++) {   
    for (int x = 0; x < width; x++)   
    rotatedData[x * height + height - y - 1] = data[x + y * width];   
    }   
    int tmp = width; // Here we are swapping, that's the difference to #11   
    width = height;   
    height = tmp;   
    data = rotatedData;  
    
    
    PlanarYUVLuminanceSource source = activity.getCameraManager().buildLuminanceSource(data, width, height);
    if (source != null) {
      BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
      try {
        rawResult = multiFormatReader.decodeWithState(bitmap);
      } catch (ReaderException re) {
        // continue
      } finally {
        multiFormatReader.reset();
      }
    }

    Handler handler = activity.getHandler();
    if (rawResult != null) {
      // Don't log the barcode contents for security.
      long end = System.currentTimeMillis();
      Log.d(TAG, "Found barcode in " + (end - start) + " ms");
      if (handler != null) {
        Message message = Message.obtain(handler, fakeR.getId("id", "decode_succeeded"), rawResult);
        Bundle bundle = new Bundle();
        Bitmap grayscaleBitmap = toBitmap(source, source.renderCroppedGreyscaleBitmap());
        bundle.putParcelable(DecodeThread.BARCODE_BITMAP, grayscaleBitmap);
        message.setData(bundle);
        message.sendToTarget();
      }
    } else {
      if (handler != null) {
        Message message = Message.obtain(handler, fakeR.getId("id", "decode_failed"));
        message.sendToTarget();
      }
    }
	  
	  
//	  long start = System.currentTimeMillis();
//	    System.out.println("decode...."+data.length+"\twidth:"+width+"\theight:"+height);
//	    Result rawResult = null;
//	    PlanarYUVLuminanceSource source =null;
//	    if(isRotate){
//	    	source = CameraManager.get().buildLuminanceSource(rotateData(data, width, height), width, height);
//	    	isRotate=false;
//	    }else{
//	    	isRotate=true;
//	    	source = CameraManager.get().buildLuminanceSource(data, width, height);
//	    }
//	    
//	    
//	    BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
//	    try {
//	      rawResult = multiFormatReader.decodeWithState(bitmap);
//	    } catch (ReaderException re) {
//	      // continue
//	    } finally {
//	      multiFormatReader.reset();
//	    }
//
//	    if (rawResult != null) {
//	      long end = System.currentTimeMillis();
//	      Log.d(TAG, "Found barcode (" + (end - start) + " ms):\n" + rawResult.toString());
//	      Message message = Message.obtain(activity.getHandler(), R.id.decode_succeeded, rawResult);
//	      Bundle bundle = new Bundle();
//	      bundle.putParcelable(DecodeThread.BARCODE_BITMAP, source.renderCroppedGreyscaleBitmap());
//	      message.setData(bundle);
//	      //Log.d(TAG, "Sending decode succeeded message...");
//	      message.sendToTarget();
//	    } else {
//	      Message message = Message.obtain(activity.getHandler(), R.id.decode_failed);
//	      message.sendToTarget();
//	    }
	    
	    
	  
//	  long start = System.currentTimeMillis();
//		Result rawResult = null;
//		
//		byte[] rotatedData = new byte[data.length]; 
//		 for (int y = 0; y < height; y++) { 
//		 for (int x = 0; x < width; x++) 
//		 rotatedData[x * height + height - y - 1] = data[x + y * width]; 
//		 } 
//		 int tmp = width; // Here we are swapping, that's the difference to #11 
//		 width = height; 
//		 height = tmp; 
//		 data = rotatedData; 
//		
//		PlanarYUVLuminanceSource source = CameraManager.get()
//				.buildLuminanceSource(data, width, height);
//		BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
//		try {
//			rawResult = multiFormatReader.decodeWithState(bitmap);
//		} catch (ReaderException re) {
//			// continue
//		} finally {
//			multiFormatReader.reset();
//		}
//
//		if (rawResult != null) {
//
//			long end = System.currentTimeMillis();
//			Log.d(TAG, "Found barcode (" + (end - start) + " ms):\n"
//					+ rawResult.toString());
//			Message message = Message.obtain(activity.getHandler(),
//					R.id.decode_succeeded, rawResult);
//			Bundle bundle = new Bundle();
//			bundle.putParcelable(DecodeThread.BARCODE_BITMAP,
//					source.renderCroppedGreyscaleBitmap());
//			message.setData(bundle);
//			// Log.d(TAG, "Sending decode succeeded message...");
//			message.sendToTarget();
//		} else {
//
//			Message message = Message.obtain(activity.getHandler(),
//					R.id.decode_failed);
//			message.sendToTarget();
//		}
  }

  private static Bitmap toBitmap(LuminanceSource source, int[] pixels) {
    int width = source.getWidth();
    int height = source.getHeight();
    Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
    bitmap.setPixels(pixels, 0, width, 0, 0, width, height);
    return bitmap;
  }

}
